When trying to upgrade from 19.7.10 to 20.1 via Web, SSH or CLI the procedure always fails with the following error:
/usr/local/sbin/opnsense-verify: Undefined symbol "ucl_object_unref"
Hardware = pcengines APU2
Can you try to bootstrap again... no settings will be lost:
# opnsense-bootstrap
Cheers,
Franco
Worked, thanks!